87226780 has 48 divisors (see below), whose sum is σ = 192780000. Its totient is φ = 33103616.

The previous prime is 87226771. The next prime is 87226801. The reversal of 87226780 is 8762278.

It is a super-2 number, since 2×87226780² = 15217022298336800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32946 + ... + 35494.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^87226780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87226780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96390000).

87226780 is an abundant number, since it is smaller than the sum of its proper divisors (105553220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87226780 is a wasteful number, since it uses less digits than its factorization.

87226780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646 (or 2644 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 87226780 is about 9339.5278253239. The cubic root of 87226780 is about 443.4894369276.

The spelling of 87226780 in words is "eighty-seven million, two hundred twenty-six thousand, seven hundred eighty".